Electric signal switch



Nov. 6,1923. 1,473,591

J. o. CADIEUX Y I ELECTRIC SIGNAL swi'rcfi Filed March 9, 1925 V INVENTOR a/dzeua:

:ATTORNEY Patented Nov. 6, 1923.

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JOSEPH O. CADIEUX, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE CONNECTICUT TELEPHONE & ELECTRIC COMPANY, INCORPORATED, 0F MERIDEN, CONNECTICUT,

A CORPORATION OF CONNECTICUT.

ELECTRIC SIGNAL SWITCH.

Application filed March-9, 1923. Serial No.-623,949.

To all whomit may concern:

Be it known that I, Josnrn O. CAoInUX, a citizen of the United States of America,

and residing at Meriden, in the county of New Haven and State of Connecticut, have invented new and useful Improvements in Electric Signal Switches, of which the following is a specification. I

My invention relates to a hand operable switch particularly intended for use in call signal systems such as are frequently used in hospitals.

The main object is to provide a simple but reliable form of mechanism which can be made at reasonable cost and by which a signal lamp maybe lighted and kept lighted and which maybe released manually to extinguish the light. I

Another object is to provide insuch a construction means for controlling an addi-' tional or supplemental signal such as a buzzer. ever relates to the switch mechanism-rather than to the type of signal or the mechanism controlled thereby.-

Figure 1 is a side view and partial section of one form of construction embodying my invention.

Fig. 2 is a front view showing the face plate and operating members.

Fig. 3 is a perspective iew of the operating members.

In this case the face plate 5 or support may be designed in any suit-able manner. The frame 6 is suitably secured to the back of the face plate and to the front of an insulating body or base 7 which carries the contact brushes 8 and 9 and the circuit terminals. One or more contacts 10 are mounted on the plunger 11 and movable therewith.- An insulating member 12 may also be mounted on the plunger 11 to support the brushes 8 and 9 when they are not.

alive. The plunger 11 is mounted to reciprocate in the body 7 and is normallyunder pressure of the spring 13 at the rear which is interposed between the body 7 and the head 14 of the plunger.

This plunger 11 is adapted to be pushed forward by pressure on the head 14 at the rear or pulled forward by the chain or cord 15 at the front. 'To facilitate .the operation of the chain or cord 1 may provide The invention herein claimed howa bushing, tubular guide or eyelet 17 secured in the face plate. \Vlren the chain is drawn out the plunger 11 and the contact 10 are moved outwardlyto the position'of Fig. 3.

The latch 20 is pivoted at 21 in the frame 6 and is normally held yieldingly in the position of Figure 1 by the pressure of the spring 22. The tapered or beveled head 23 of the plunger 11 is adapted to tilt the latch 20 as the plunger is drawn out and the spring 22 is adapted to throw the latch 20 behind the head 23 to hold it in position as shown in Figure 3. \Vhen in this latched position ofv Figure 3 the brush 8 rests on the contact 10" By pulling .the plunger 11 out a little further-the contact lO'niay engage the brush 9 for a supplemental or additional signal. These brushes 8 and 9 may be arranged for simultaneous contact or consecutive contact so that both signals will operate at the same time or separately.

The lever Q-f passes through the face plate and is in effect pivoted therein. Its inner end has a projection 25 guided in the frame 6 beneath the projection 26 on the latch 20 so that when the thumb-piece 24 is depressed the latch 20- is raised and the head 23 released so that the-spring 13 can move the plunger to the rear to the position shown in Figure 1' at which time the movable contact member presses against the base of the'frame 6.

I claim:

1. In an electric switch, a face plate, a frame secured to the back thereof, an insulating body carried by said frame, a contact carrying plunger reciprocable in said body, a latch for said plunger, a cord for operating said plunger in one direction, and manually operable means for releasing said latch.

2. In an electric switch, a faceplate, an insulating body carried thereby, a plunger reciprocable in said body, a contact carried thereby, a spring for operating said plunger in one direction, said plunger having a head at the rear end and a cord connected to the front end of the plunger passing through the face plate.

3. In a switch, an insulating base, a plunger movable through said base, a contact carried thereby at one end of said base,

enlarged heads on opposite ends of said plunger, a latch coacting with o-nehead and a spring arranged between the opposite head and the body, and apull chain for op erating said plunger. i v w 4. In an electric switch, a face plate, a U- shaped metallic frame secured to said plate, an insulating base secured to said frame, a

reciprocable plunger supported i one 9f; said parts, a contact member carried by said" plunger, spring contact fingers carried b said base and adapted to be engaged by said contact member, a latch carried by one sid of said frame and adapted to engage said plunger and means for releasing said latch. 5. In a switch, a face plate, a U-shaped metallic frame secured to said face plate, an

insulating base secured to'said fraine,1 plunger having an operating member guide in said face plate, a contact member carried b said plunger, spring contact fingers car- 1 rled by said base and adapted to be con}- nected by said contact member, a latch carried by said-frame and adapted to automati cally engage said plunger and hold the switch in closed circuit condition, and a releasing member carried by oneside of said frame and adapted to disengage said latch from said plunger.

6. In an electric switch, a base, a contact plunger movable in said base and having a pull chain, operator, a transversely movable latch for holding said plunger, :1 spring for moving said plunger and 'a pivoted retracting member for said latch.

7. In an electric switch, a face plate, a metallic frame secured thereto, an insulating base secured to said frame, a contact plunger extending through said base, an operating member extending through said face plate, a latch for said plunger, and a pivoted finger piece for releasing said latch.

8. In a switch, a faceplate, an insulating base carried thereby, contact fingers carried by said base, a contact member operable between said fingers, an operating member connected to said contact member and ex plate contacti'n ember tending through said face plate, a spring opposing the action of said operating'member, a latch for holdingsaid contact member in a closed circuit position, arelease member for said lat'clljextendiii .through'said face an? operatlng (member and mevable cable toward} a aelea a .id 'fie inata "operating member movable through aid."

face plate, alatch carried by said frame and movable laterally to hold said contact memher in closed circuit position and arele'ase membripiilwd Said frame-and extending Iii-(211, 11, Sell '0 alongside Said peratiiig'm 'tric a; faceplate, an insulatinrr base-, ,aii-frame' connecting said base witli said" face plate, contacts carried .by said bas'e,"afiontact member reciprocable between said contacts, an operating member for said contact member extending. through her to engage the same, a spring for holding said latch yieldingly in place and a release member engaging said latch tomove it laterally and having a finger piece extending outside. of said face plate and movable transversely with respect to the direction of movement of said contact member.

JOSEPH O. CADIEUX. 

